CN219933145U - Thermal insulation stop valve with corrugated pipe protection structure - Google Patents
Thermal insulation stop valve with corrugated pipe protection structure Download PDFInfo
- Publication number
- CN219933145U CN219933145U CN202321236345.8U CN202321236345U CN219933145U CN 219933145 U CN219933145 U CN 219933145U CN 202321236345 U CN202321236345 U CN 202321236345U CN 219933145 U CN219933145 U CN 219933145U
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- CN
- China
- Prior art keywords
- valve
- bellows
- protection structure
- valve rod
- thermal insulation
- Prior art date
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- 238000009413 insulation Methods 0.000 title claims description 9
- 239000004576 sand Substances 0.000 claims abstract description 34
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 238000004321 preservation Methods 0.000 claims abstract description 9
- 230000000903 blocking effect Effects 0.000 claims description 24
- 238000003466 welding Methods 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 10
- 238000004512 die casting Methods 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
The utility model provides a heat-preservation stop valve with a corrugated pipe protection structure, which comprises a valve body, a valve cover, a valve rod, a valve seat, a fluid channel and a valve clack, wherein the valve rod, the valve seat, the fluid channel and the valve clack are arranged in the valve body; the bellows protection structure is arranged below the bellows on the valve rod, the protection structure comprises a sand baffle plate, the sand baffle plate protrudes out of the periphery of the valve rod in an annular mode and is in clearance fit with the inner wall of the valve body, the sand baffle plate can effectively prevent solid impurities from entering between the bellows and the inner wall of the valve body, damage to the bellows is avoided, zero leakage of the valve is guaranteed, and the service life of the bellows and the valve is effectively prolonged under the premise of long-term stable operation under constant temperature.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a heat-preservation stop valve with a corrugated pipe protection structure.
Background
Under the severe working condition, the valve is required to be in zero leakage and stably work for a long time under constant temperature, but the position of the valve filler becomes a leakage heavy disaster area due to frequent actions, in order to solve the problem, a person skilled in the art welds one end of the corrugated pipe on the valve cover and one end of the corrugated pipe on the valve rod, so that the problem that a medium leaks out from the stuffing box is well solved, for example, patent publication No. CN211117910U (a corrugated pipe assembly for a high-temperature and high-pressure valve) and patent publication No. CN210397740U (a corrugated pipe stop valve with high sealing property).
However, the pipeline layout of the small-caliber valve is complex, the pipeline is branched, solid impurities such as welding slag, scrap iron and the like in the pipeline are difficult to remove after engineering installation, residual impurities are easy to wash the corrugated pipe under the drive of a medium, so that the corrugated pipe is damaged, or solid particles are blocked between the wave troughs of the corrugated pipe to influence the normal operation of the corrugated pipe. To solve the above problems, it is necessary to develop a valve with a bellows protection structure, which protects the bellows structure and prolongs the service life of the bellows and the valve under the precondition of ensuring zero leakage of the valve and long-term stable operation at constant temperature.
The utility model aims to overcome the defects and the shortcomings in the prior art and provide a heat-preservation stop valve with a corrugated pipe protection structure, and the technical scheme adopted by the utility model is as follows:
the utility model provides a heat preservation stop valve with bellows protection architecture, includes valve body, valve gap, sets up in valve rod, disk seat, fluid passage in the valve body, with valve rod complex valve clack, the valve rod overcoat is equipped with the bellows, bellows protection architecture is including being located bellows below position, setting up in the fender sand board of valve rod periphery, the fender sand board is annular and protrusion in the valve rod periphery, makes fender sand board and valve body inner wall clearance fit.
The sand blocking plate is in clearance fit with the inner wall of the valve body, and the clearance is 0.5-1mm; the side of the sand baffle facing the valve seat is provided with a hard alloy coating.
One side of the sand baffle close to the corrugated pipe is welded at the lower end part of the valve rod in an angle mode, and the welding angle is arc-shaped.
One side of the sand baffle is sprayed with hard alloy with the thickness of 0.3mm, and the binding force is not less than 70MPa. The sand blocking plate is welded on the head of the valve rod, the surface sprayed with alloy is opposite to the direction of the valve seat, the surface without alloy is fillet welded with the head of the valve rod, the fillet welding height is 1.5 times the thickness T of the sand blocking plate, and the shape of the fillet weld is arc R=1.5T.
The sand blocking plate is connected with the valve rod through a first flange, the first flange is arranged at the lower end part of the valve rod, and the valve cover is matched with the first flange to limit the corrugated pipe.
The valve clack is bullet-shaped and comprises a blocking part which is in contact fit with the valve seat to block fluid, and a conical part which further stretches into the central channel when the blocking part is in contact fit with the valve seat.
By means of the aerodynamic principle of bullets, the valve clack is designed into a bullet-shaped appearance, so that the flow resistance is reduced, and the fluid flow can be finely regulated through the opening and closing degree of the valve clack.
The valve seat is characterized in that a first buffer wear-resistant layer is arranged on the contact surface of the valve clack and the valve seat, and a second buffer wear-resistant layer is arranged on the contact surface of the valve seat and the valve clack.
The valve body is externally provided with a heat-insulating jacket, and the heat-insulating jacket is integrally formed by stainless steel die casting. The heat preservation jacket provides constant temperature guarantee for the medium, and stainless steel die casting forming production efficiency is high, compares with traditional steel sheet assembly welding and reduces by a wide margin the welding seam quantity.
The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.
The beneficial effects of the utility model are as follows: the bellows protection structure is arranged below the bellows on the valve rod, the protection structure comprises a sand baffle plate, the sand baffle plate protrudes out of the periphery of the valve rod in an annular mode and is in clearance fit with the inner wall of the valve body, the sand baffle plate can effectively prevent solid impurities from entering between the bellows and the inner wall of the valve body, damage to the bellows is avoided, zero leakage of the valve is guaranteed, and the service life of the bellows and the valve is effectively prolonged under the premise of long-term stable operation under constant temperature.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.
FIG. 1 is a schematic overall structure of embodiment 1;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is an enlarged view at B in FIG. 2;
FIG. 4 is a schematic view of the insulating jacket structure of example 1, wherein a is an external view, b is a front view, c is a left side structural view, and d is a half-sectional top view;
in the figure, the electric actuator comprises a 1-electric actuator, a 2-connecting disc, a 3-packing pressing plate, a 4-packing pressing sleeve, a 5-packing, a 6-valve cover, a 7-gasket, an 8-corrugated pipe, a 9-valve rod, a 91-sand baffle, a 92-hard alloy coating, a 93-welding angle, a 94-first flange, a 10-valve clack, a 101-blocking part, a 102-conical part, a 11-valve body, a 12-heat-insulating joint, a 13-heat-insulating jacket, a 14-valve seat and a 15-central channel.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.
It should be noted that, in the embodiments of the present utility model, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.
The terms of direction and position in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the utility model and are not intended to limit the scope of the utility model.
As shown in fig. 1-4, a thermal insulation stop valve with a bellows protection structure comprises a valve body 11, a valve cover, a valve rod 9 arranged in the valve body 11, a valve seat 14, a fluid channel and a valve clack 10 matched with the valve rod 9, wherein the bellows 8 is sleeved outside the valve rod 9, the bellows protection structure comprises a sand blocking plate 91 arranged at the periphery of the valve rod 9 and positioned below the bellows 8, and the sand blocking plate 91 is annular and protrudes out of the periphery of the valve rod 9, so that the sand blocking plate 91 is in clearance fit with the inner wall of the valve body 11.
The sand blocking plate 91 is in clearance fit with the inner wall of the valve body 11, and the clearance is 0.5-1mm; the side of the sand screen 91 facing the valve seat 14 is provided with a cemented carbide coating 92.
The sand blocking plate 91 is welded at the lower end of the valve rod 9 at a corner near the corrugated pipe 8, and the welded corner 93 is arc-shaped.
And one surface of the sand blocking plate 91 is sprayed with 0.3mm hard alloy, and the binding force is not less than 70MPa. The sand blocking plate is welded on the head of the valve rod 9, the alloy spraying surface is opposite to the valve seat 14, the alloy non-alloy surface is fillet welded with the head of the valve rod 9, the fillet welding height is 1.5 times the thickness T of the sand blocking plate, and the fillet welding shape is arc R=1.5T.
The sand blocking plate 91 is connected with the valve rod 9 through a first flange 94, the first flange 94 is arranged at the lower end part of the valve rod 9, and the valve cover is matched with the first flange 94 to limit the corrugated pipe 8.
The fluid passage includes an inflow passage, an outflow passage, a central passage 15 communicating the inflow passage and the outflow passage, and the valve flap 10 is bullet-shaped and includes a blocking portion 101 for blocking fluid in contact engagement with the valve seat 14, and a tapered portion 102 extending further into the central passage 15 when the blocking portion 101 is in contact engagement with the valve seat 14.
By means of the aerodynamic principle of bullets, the valve clack is designed into a bullet-shaped appearance, so that the flow resistance is reduced, and the fluid flow can be micro-regulated through the opening and closing degree of the valve clack 10.
The contact surface of the valve clack 10 and the valve seat 14 is provided with a first buffering wear-resistant layer, and correspondingly, the contact surface of the valve seat 14 and the valve clack 10 is provided with a second buffering wear-resistant layer.
The outside of the valve body 11 is provided with a heat preservation jacket 13, and the heat preservation jacket 13 is integrally formed by stainless steel die casting. The heat preservation jacket 13 provides constant temperature guarantee for the medium, and stainless steel die casting forming production efficiency is high, and compared with traditional steel plate assembly welding, the number of welding seams is greatly reduced.
The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.
Claims (8)
1. The utility model provides a heat preservation stop valve with bellows protection architecture, includes valve body (11), valve gap, valve rod (9), disk seat (14) that set up in valve body (11), fluid passage, with valve rod (9) complex valve clack (10), valve rod (9) overcoat is equipped with bellows (8), its characterized in that: still include bellows protection architecture, bellows protection architecture is including being located bellows (8) below position and setting up in fender sand board (91) of valve rod (9) periphery, fender sand board (91) are annular and bulge in valve rod (9) periphery, make fender sand board (91) and valve body (11) inner wall clearance fit.
2. A thermal insulation stop valve with a bellows protection structure according to claim 1, characterized in that: the sand blocking plate (91) is in clearance fit with the inner wall of the valve body (11), and the clearance is 0.5-1mm.
3. A thermal insulation stop valve with a bellows protection structure according to claim 1, characterized in that: a hard alloy coating (92) is arranged on one side of the sand blocking plate (91) facing the valve seat (14).
4. A thermal insulation stop valve with a bellows protection structure according to claim 1, characterized in that: the sand blocking plate (91) is welded at the lower end part of the valve rod (9) at one side close to the corrugated pipe (8) in a corner mode, and the welding angle (93) is arc-shaped.
5. A thermal insulation stop valve with a bellows protection structure according to claim 1, characterized in that: the sand blocking plate (91) is connected with the valve rod (9) through a first flange (94), the first flange (94) is arranged at the lower end part of the valve rod (9), and the valve cover is matched with the first flange (94) to limit the corrugated pipe (8).
6. A thermal insulation stop valve with a bellows protection structure according to claim 1, characterized in that: the fluid channel comprises an inflow channel, an outflow channel and a central channel (15) which is communicated with the inflow channel and the outflow channel, the valve clack (10) is in a bullet shape and comprises a blocking part (101) which is in contact fit with the valve seat (14) to block fluid, and a conical part (102) which further stretches into the central channel (15) when the blocking part (101) is in contact fit with the valve seat (14).
7. The insulating shut-off valve with bellows protection structure of claim 6, wherein: the valve seat is characterized in that a first buffer wear-resistant layer is arranged on the contact surface of the valve clack (10) and the valve seat (14), and a second buffer wear-resistant layer is arranged on the contact surface of the valve seat (14) and the valve clack (10).
8. A thermal insulation stop valve with a bellows protection structure according to claim 1, characterized in that: the valve body (11) is externally provided with a heat-insulating jacket (13), and the heat-insulating jacket (13) is integrally formed by adopting stainless steel die casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321236345.8U CN219933145U (en) | 2023-05-17 | 2023-05-17 | Thermal insulation stop valve with corrugated pipe protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321236345.8U CN219933145U (en) | 2023-05-17 | 2023-05-17 | Thermal insulation stop valve with corrugated pipe protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219933145U true CN219933145U (en) | 2023-10-31 |
Family
ID=88493904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321236345.8U Active CN219933145U (en) | 2023-05-17 | 2023-05-17 | Thermal insulation stop valve with corrugated pipe protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219933145U (en) |
-
2023
- 2023-05-17 CN CN202321236345.8U patent/CN219933145U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |